Pin-setting machine



vAllg. G, 1949. I v L, B, GlRAR'D i 2,479,159

PIN- SETTING MACHINE Filed Aug. 5l, 1946 5 Sheets-Sheet 2 IN VEN TOR.

Lauris G'ard Aug. 16, 1949. L; B; GmARD' 2,479,159

PIN-SETTING` 'MACHINE Filed Aug. s1, 194e 5 Sheets-sheet s I' TTOZNEVPatented Aug. 16, `1949 ummm, @mehr onen: E@

I ApplieaiianAugustsi, 194aaserialgrblmglf 1o Claims. (Cms-1.) y

This invention relates to-machines forrsetting; means fonmovingrolieriapidlyndjaccurately pins *in^woocland 'more`particiuitn'l'yj,pertains to; g from a loadingvppsitibnttoja'rpn-settingnpgsitiqn a'machine-for'setti-ng the bearngorgaxlepinsandb'acl; againjfomunieming;w

the ends of window-'shade'curtain-rollers; and`bne-Stillaffurthlerobjectnfvthe inverition'is` mpio-5 of fthe principal'objects thereof is-to *providefai 5vd.e;a pin-settngmachinein`Which'ainotivating-` machine-capable^ of; setting --th'e pinswiththe; force maybe'applied-with-increasing@leyerage toaccuracy'requisite for-ismoothfand even rotationforcethaipinntofthe;rollerjandfwithdecreased;

ofthe rollers.:A

leveragefand:highertspeed *ratios -t1i1QU-ghother I-Iithertoymachinesforsetting; pins :inthe "ends-f parts of; theoperatingpyle'.

of 'curtain-rollers'have-fedv Jthe pins to'anfinserf` 10c Iaccomplish;the` ;abtrye'; andhjothei'j objects o@ i ti'onpoint andihavemoved.the'rolleragainstrthethe invention bypgvidingmjainernent'pinsnsligiablyu pin'by means of-a-1carrage^inwhichthe vrollenis interconnecting'jthejawsfofjhejclampingfmeche clamped fandwhich ist moved-'againstthe *resist-i anism Jvsfhioh*#nuovejtlgrerewithj fand yjprevent mis: v anceof-'springs-to-press-theend;of'ttlfiewroldeiL alinementofthejaws'and-which' render mutual? against the pin:` thelearriageb'eingfsubsequenty15`=sup1oo1ft tn thejaws ,soastopermitgelatiyemgvereturned to-its `originalwAposition'-by-jthesprings.:` ment Lthei;eoff'witlfront'windingv and; byqdi3fi li 1ji gP The motivatingw forcew might be applied--- tofthe thefcha-in :iin-hage 1between;tli'ejocgt'-ipeal4 angl-the; carriagevbya-chain `attached-to-tlr1e carriage ancl carriage vi1.ito,v a diivinglchain;-aniaggiriven chain leading over suitably; arrangedsprockets tof' -a andA attaelfiing Ithese;` chains gto Aajyaijviablgeleverage-5 foot-pedal. To'expedite-the--operanon-ithasbeem zo nilth'eeforrnpfcamsloy;whicbstlle;Sn@efileppwel` desirableto-havethe-'clamping mechanism ofthe; ratio manbe;suitab1ylyvaniedidulnggthe cyle Fof carriage motivatedbyithe^preli-minary;movernentopeijat-ion;r f

of the carriage, so that the -rolle'r couldfbe-placed-I`VFort-heobiectsandfadvantages-oi"my:invenf between open clampingfjaws;andfthenmlamfped tioriwilib'e apparentfrbmo JvWilli-byesp ecificalhgA,`

and moved against the pin-withones-operatioirof 25 pointedoutintheifollowin the-foot-'peda-ls Butoperating;thevjawsf-ofJtheembodiment of 'theinvention;-

escrption; 0i, one. illustrated'infthel:

clamping mechan-is'mbyfthedmovement'bf thecarfiaccompanyingldiawingtsilineferene wheitetog' riagewequired that 'thefawsi be-movaleletowa-r1s`- Fig; 1v is'fa, side felevaf/ion *ofjja'Vpvin-settingma eachother inone dimensonfandrela-tivel-y tosthe chineaccordinggto *my* invention; fi'eaciyn 'togeeiveh carriagein'another-diinensiong-,andfthereforenre :30 a-ro1l er;

required to performthis-partf' of-fthednperation; Fig-6 isafrag'inentarylongitujinal VeiticaJ'se;

speedi of carriage-travel? whicha reduced; thei-r-n 'Figs8isa-transveigsejseetionfsimilai' toff'` output:A taienbirthefline8MBof-*TlifgfgA Gfwith; the roller,v

It is; therefore, animportantfobjeet of"t1ie-in=-fshownaing-'plaeeandfthewlamning;mechanism in,j vention '.to'piiovide;clamping means Jmountedlon-@a-Ao openf pesitiomj l movable: carriage4and iactivated the movementl FiggjQfisf astrgansverse sectionpnthe lineofdv thereof forr holding a-x rollerainjaxial-a1irrementit Figi 1: andonconsiderably enlarged, fsggleMshoWf.

Another object-of"theinvention is to provide of Fig. lfand on the scaleof Figs.' 7 and 8; and

Fig. 11 is an enlarged fragmentary detail as taken on line II-II in Fig.10.

Referring particularly to Figs. 1, 2, and 11, in which the machine isshown at the start of the cycle of operation, the machine is seen tocomprise a frame II, shown as mounted on a workbench I2, a carriage I3mounted slidably on Vthe frame II for moving Va roller I4, a pin-feedingmechanism designated generally at I5, a pin chuck I6 for directing a pinI1 (see Fig. 5) into the roller, and a drive mechanism I8 from which adriving chain I9 leads to an operating means such as a foot-pedal orother source of power, not shown, and a driven chain connects with thecarriage I4. v

The frame I I has end posts 2 I 'and 22 in which are held the ends ofmain guide rods 23 defining an axis of movement for the carriage I3. Thecarriage I3 has a forward crosshead 24 and a rearward crosshead 25sliding on the guide rods 23, and is held normally in the rearwardposition shown in Figs. 1 and 2 under spring bias, as by the action ofcompression springs 26 bearing against the end post 2| and the forwardcrosshead 24 and coiled around the guide rods. The forward crosshead 24and rearward crosshead 25 are provided, respectivelywith lugs 21 and 28,the former being spaced' more widely than the latter. Jaw guides 29 aresecured at their rearward ends in lugs 28, and are secured adjacenttheir mid-points in lugs 21, the wider spacing of lugs 21 causing thejaw guides 29 to diverge from the axis of movement defined by the guiderods 23 although they lie in a plane parallel to that axls.

.A pair of jaws 3l are mounted slidably on the jaw guides 29 by means oflonger bracket arms 32 journaled upon the divergent ends of the jawguides and shorter bracket arms 33 journaled upon the jaw guides betweenthe lugs 21 and 28. The diierence in length of the bracket arms 32 and33 is such that the faces 34 of the jaws may be held parallel and arethus also parallel to the axis of movement of the carriage I3. The jaws3I are urged toward the convergent ends of the jaw guides 29 by tensionsprings 35 secured to the end post 22 and the longer bracket arms 32,and such movement is limited by contact of ears 33, depending from eachof the jaws, with a bridge or post 31 across the frame II. The movementof the carriage I3 under the bias of the compression springs 26 islimited by contact of the crosshead 25 with the end post 22. Thestrength of springs 2B is preferably made materially greater than thatof springs 35, but in any case springs 26 and 35 both act upon thecrosshead 2 4 in the same direction, the springs 23 acting directly andsprings 35 acting through the bracket arms 32 and 33, ,thencefrictionally upon the guides 29 carried by the crosshead 24.

The driven chain 20 is connected to the crosshead 24 and is led thenceto an edge cam or eccentric drum 38 securedV to a shaft 39 journalled inthe frame I I. l A second cam 4I, similar in shape but of opposite handto the cam 38 is also secured to the shaft 39 with its shoulder set atapproximately 180 from the shoulder of cam 38 and faced in the oppositedirection of rotation. The cams 38 and 4I may be formed integrally withone another, or may separately be aiiixed to the shaft 39. The drivingchain I9 is attached to the cam 4I and leads downward therefrom to anoperating mechanism such as a foot-pedal (not shown). Both chains arearranged to lead over the shoulders of their respective cams and to besecured to the cams at the low points thereof immediately beyond theshoulders so that when either of the chains leads tangentially from thepeak of its respective shoulder, the other is disposed a three-quarterturn around its cam and leads tangentially from the low point thereof.At the start of the cycle of operation (see Figs. 10 and 11), chain 20leads tangentially from the shoulder of cam 38 and chain I9 has athree-quarters wrap on cam 4I. At the midpoint of the operation cycle,when the pin I1 is pushed into the roller I4` (Fig. 5) chain I9 leadstangentially from the shoulder of cam 4I, and chain 29 has athree-quarter wrap on cam 33 and leads from the low point thereof.

It will be seen that the arrangement of the chains I9 and 20 upon thecams 4I and 38 will cause maximum velocity of the carriage I3, relativeto the velocity of the actuating foot-pedal, at the start of the cycleof operation; and that Iat the first forward movement of the carriage,the resistance of the tension springs 35 will cause ,the jaws 3I toslide toward the convergent ends of the jaw guides 29, bringing the jaws3l toward each other. The jaws are thus moving, relative to the frame II, in two directions simultaneously. To insure high speed operation ofthe jaws without rocking or binding which would cause misalignmentthereof, the jaws are interconnected by alignment pins 42 (see Figs. 1,7 and 8) each of which is secured in one of the ears 3B and is slidablein a hole 43 in the opposite ear. The placement of the pins 42 at adistance from the plane of the jawguides 29 enables them to be looselyfitted in their respective holes 43 and yet quickly to check-any rockingof the jaws upon the jaw guides. The loose fit and quick action preventsthe pins from binding in the holes, and the fact that the pins also havethe function of maintaining the jaws in longitudinal alinement helps tokeep them free, the pressures engendered in two directions each breakingthe pins loose from the effect of the other.

The seizure of the roller I4 by the jaws 3i, while performed rapidly dueto the setting of the cams 38 and 4I, is also performed gently becausethe same setting exerts a minimum leverage at the movement of seizureand that leverage is further offset bythe yielding of the springs 35.VThus a roller not in perfect alinement with the jaws willbe seized bythe jaws rapidly but will not be crushed thereby.

A push rod 44 is secured to the end post 2| by a pin 45, and extendsinto a central bore 43 in the chuck I6. The chuck is mounted slidably onthe rod 44 and in the frame II and `is urged toward the carriage I4 by aspring 41 coiled upon the rod 44. VA slot 48 (Figs. 9 and 10) in theupper side of the chuck I6 communicates with the bore 46 thereof, toreceive pins I1 either manually or from the pin-feeding mechanism I5.The head end of the chuck facing the carriage I3 is concaved as shown at49 to receive and aline the end of the roller I4. Chuck jaws for holdingthe stem of a pin I1 and for subsequently permitting passage of the headof the pin, are provided by balls 5I set in radial holes 52 in the chuckI6 near the concave or head end and backed by springs 53 and set-screws54'. The motion of the chuck I6 urged by the spring 41 is limited by aretaining pin 55 which has one arm 5B passing through a hole in theupper part of the chuck 1I6 and acting as a stop therefor by contactwith the frame II, and a second arrn 51 which passes slidably through ahole in the frame II parallel Asmeretofore meifcaemheerzie frime-f:nleased from.compressionmureeummheeweie" sfsnaftsees:aboutfmeequefteiegdfra Sem.. Y sse holdsv thee pin Estationary',foreingvl'theepoifit thenltheihe'ad :thereoff-betweeniithei'aflimhg bellStand into the-rellenas 1a resultbthecontinued movement of the rollerandrthe:Chlickrelajtiveti/ awaits modifications may be made intheapplication of the principles. of the invention, wherefore the scopeof the appended claims is not to be considered as limited to the hereindelineated form of apparatus.

I claim:

1. In a machine of the character described; a frame; a carriagereciprocable on said frame in a straight line of movement; guide meanssecured to said carriage mutually divergent from said line of movementin a plane parallel thereto; a pair of clamping jaws mounted slidably onsaid guide means and so extended therefrom as to have their clampingfaces disposed parallel to said line of movement; and means secured toeach of said jaws and respectively coacting with the other jaw forholding the other of said jaws substantially parallel therewith.

2. In a machine of the character described: a frame; a carriagereciprocable on said frame in a straight line of movement; guide meanssecured to said carriage mutually divergent from said line of movementin a plane parallel thereto; a pair of clamping jaws mounted slidably onsaid guide means and so extended therefrom as to have their clampingfaces disposed parallel to said line of movement; and means secured toeach of said jaws and respectively coacting with the other jaw forholding the other of said jaws substantially parallel therewith and inalinement therewith transversely of said line.

3. In a machine of the character described: a frame; a carriagereciprocable on said frame in a straight line of movement; guide meanssecured to said carriage divergent from said line of movement in a planeparallel thereto; a pair of clamping jaws mounted slidably on said guidemeans and so extended therefrom as to have their clamping faces disposedparallel to said line of movement; and means secured to each of saidjaws and slidably engaging the other of said jaws for holding the otheroi' said jaws substantially parallel therewith and in alinementtherewith transversely of said line.

4. In a machine of the character described; a frame; a carriagereciprocable on said frame in a straight line or" movement; guide meanssecured to said carriage divergent from said line of movement in a planeparallel thereto; a pair of clamping jaws mounted slidably on said guidemeans and so extended therefrom as to have their clamping faces disposedparallel to said line of movement; and pins secured to each of said jawsand slidably engaging the other of said jaws for holding the other ofsaid jaws substantially parallel therewith and in alinement therewithtransversely of said line.

5. In a. machine of the character described: a frame; a carriagereciprocab-le on said frame in a straight line of movement; guide meanssecured to said carriage divergent from said line of movement vin aplane parallel thereto; a pair of clamping jaws mounted slidably on saidguide means Y and so extended therefrom as to have their clamping facesdisposed parallel to said line of movement; and pins secured to each ofsaid jaws and slidably engaging the other of said jaws for holding theother of said jaws substantially parallel therewith and in alinementtherewith transversely of said line of movement, said pins andV saidVguide means lying in parallel planes spaced substantially apart. l

'6. In'a machine of the character described: a frame; a carriagereciprocatingly movableon said frame between a iirst position'and asecond position in a straight line of movement; means yieldinglyurgingsaid carriage to said first position; jaws on said carriage actuable bythe movement thereof to grasp a work-piece; means for holding a pinelement in alinement with said line of movement at alocationprelated tosaid second position of said carriage, whereby upon move-y ment of saidcarriage to said second position said work-piece is moved relative tosaid pin element to Cause the same to `be pressed into said workpiece;and means for moving said carriage from said rst position to said secondposition exerting a mechanical leverage on said carriage providingrvanincreased mechanical advantage with the approach of said carriage tosaid second position.

'7. In a machine of the character described: a frame; a carriagere'ciprocatingly movable on said frame between a first position and asecond position in a straight line of movement; means yieldingly urgingsaid carriage to said first position; jaws on said carriage alineableparallel to said line' of movement for grasping a work-piece; meansactuable by the initial movement of said carriage for yieldingly closingsaid jaws upon said workpiece; means movable with said jaws formaintaining the faces cf said jaws parallel to said line and inalinement transversely to said line; means for holding a pin Yelement inalinement with said line of movement at a location related to saidsecond position of said carriage whereby upon movement of said carriageto said second position said work-piece is moved relative to said pinlelement to cause the same to be pressed into said work-piece; and meansfor moving said carriage from said rst position to said' second positionat a velocity decreasing, and with a mechanical leverage on saidcarriage increasing with the approach of said carriage toV said secondposition whereby said jaws grasp said work-piece with maximum velocityand minimum pressure, and said work-piece is pressed against said pinelement with increasing pressure.

8. In a machine of the character described: a frame; a carriagereciprocatingly movable on said frame between a first position and asecond position in a straight line of movement; means yieldingly urgingsaid carriage to said first position;

jaws on said carriage actuable by the movement' .ment of said carriageto said second position said work-piece is moved relative to said pinelement to cause the same tobe pressed into said workpiece; iiexiblemeans having a driving portion and a-driven portion, saidV drivenportion being connected to Vsaid carriage andoperable to move saidcarriage from' said-'first position to said second position; and camsmounted on said frame and rotatable as a unit" and forming drums whereonsaid flexible means are windable intermediately of said-portions, saidcams being so arranged and said flexible means being so wound thereon asto move said carriage with decreasing ing velocity-withgthe approachofsaid carriage to said second position.

9. In a machine of the character described: a frame; a carriagereciprocatingly movable on said frame between a first position and asecond position -in a straight'line'of movement; means yieldinglylurging said carriage to'V said first position; jaws on said carriagevactuable'by the lmovement thereof to grasp a work-piece; means forholding a pin element in alinement with said line of movement at alocation related to said second position of said carriage, whereby uponmovement of said carriage to said second position said work-piece ismoved relative to said pin element to cause the same to be pressed intosaid Work-piece; a pair of eccentric drums mounted rotatably as a uniton said frame; flexible means windable on one of said drums and defininga driving member adapted to cause concurrent rotation of said drums whena pull is exerted on said iiexible means to effect unwinding thereoffrom said one drum; additional flexible means extending substantiallyparallel to said line of movement and secured to said carriage andWindable on the other of said drums in direction opposite to the windingof said first mentioned flexible" means, whereby the unwinding of saidrst mentioned exible means causes the Winding of said additionalflexible means and movement of said carriage toward said secondposition; the eccentricity of said drums being so relatively disposed asto produce an increase in the speed of said unwinding of said firstmentioned flexible means and a decrease in the speed of Winding of saidadditional exible means with the approach of said carriage to saidsecond position.

10. In a machine of the character described: a frame; a carriagereciprocatingly movable on said frame between a first position and asecond position in a straight line of movement; means yieldingly urgingsaid carriage to said rst position; jaws on said carriage actuable bythe movement thereof to grasp a work-piece; means for holding a pinelement in alinement with said line of movement at a location related tosaid second position of said carriage, whereby upon movement of saidcarriage to said second position said Work-piece is moved relative tosaid pin element to cause the same to be pressed into said work-piece; apair of edge cams of opposite hand mounted rotatably as a unit on saidframe; flexible means normally Wound 0n the edge of one' of said camsand unwindable therefrom when said cams are rotated in one direction,the hand of said one cam being such as to cause an increasing rotativeforce to be exerted `on said cam by application of constant pull on saidflexible means during said rotation; and additional flexible meansextending substantially parallel to said line of movement and secured tosaid carriage and to the other of said cams so as to be wound on theedge of said other cam at a decreasing rate of winding during saidrotation, whereby unwinding said first mentioned flexible means fromsaid one cam' propels said carriage toward said second position withdecreasing velocity and increasing mechanical advantage.

LOUIS B. GIRARD.

REFERENCES CITED UNITED STATES PATENTS Name Date Miller June 12, 1928Number

